Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

A new investigation into old Kepler data has revealed that a planetary system once thought to house zero planets actually has ...

A planetary system of six exoplanets in near-perfect synchronization gives astronomers a hint at how such groupings could evolve. Over a period of seven years, astronomers have observed the star ...

Studying a star in the Big Dipper, astronomers have for the first time found a planetary system that reminds them of home. The planetary system–actually a pair of planets–orbits 47 Ursae ...